Competency Goal 2: The learner will use geometric and algebraic properties of figures to solve problems and write proofs.

Geometry

Geometry

Standard G-7: The student will demonstrate through the mathematical processes an understanding of the surface area and volume of three-dimensional objects.

7th Grade

Geometry

The student will develop an understanding of geometric concepts and relationships as the basis for geometric modeling and reasoning to solve problems involving one-, two-, and three-dimensional figures.

8th Grade

Geometry

The student will develop an understanding of geometric concepts and relationships as the basis for geometric modeling and reasoning to solve problems involving one-, two-, and three-dimensional figures.

Geometry

Measurement

Students will apply appropriate units of measurement; develop effective estimation and computation strategies for solving real world problems involving length, area, and volume; and choose appropriate techniques and tools to measure quantities in order to

Teacher should monitor the room for questions and make sure that students are on the correct
website.

Closure

You may wish to bring the class back together to discuss any problems that were especially hard
for students to solve. Once the students have been allowed to share what they found, summarize
once more the main points of the lesson.

You may wish to have students discuss the second question on the Record Sheet that asks students
to look for a relationship between the volume and surface area of a rectangular prism.

Alternate Outline

This lesson can be rearranged for if there is only one computer available in the classroom.

Instead of having students complete Record Sheet in pairs, display the Compute mode on a
classroom computer, record the dimensions on the whiteboard, and have students work
independently to solve for the surface area. Once students have computed the surface area, have
one student enter the number to check answer.

Suggested Follow-Up

This lesson is designed to be followed by a
lesson that generalizes the formula for surface area to all prisms.